I know you're kidding, but that's actually happened to us before. There are a large number of bugs in .NET's mail handling that, if you call Microsoft, they'll say they've fixed for an upcoming point release. And, to be honest, I do believe them, insofar as there is some repository, somewhere, where a programmer at MS checked in a fix. It just doesn't do a lot of good to you if you're trying to ship software now instead of next year.